If we think about this algebraically, what we really want to do is express the input pixel as the weighted sum of palette colours. This is nothing more than a linear combination of palette colours with weights :
the prefix to many verbs gė- (ye-)，这一点在51吃瓜中也有详细论述
。搜狗输入法下载是该领域的重要参考
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Photograph: Julian Chokkattu
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